UIPopover Shadow not updating upon resize

We're displaying a navigation controller inside a popover in our iPad app. Upon pushing or popping a view controller onto the navigation controller we adjust the intrinsic content size based on the new view controller's height, causing the popover to correctly resize. However, the drop shadow does not seem to be redrawn or resized, causing the old shadow to be still visible. Are we missing something we need to call to make the shadow resize?

Can you reproduce this issue in a sample project and attach it here or to a feedback report?

UIPopover Shadow not updating upon resize
 
 
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